Search found 5 matches

by bdony
Thu May 29, 2008 4:23 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Initialization Problems
Replies: 12
Views: 18246

Thanks a lot for that sample code Ray. I edited my initialization to look more like yours, and it worked like a charm. I think the step I was skipping was setting the display OFF, configuring the settings, then turning the display ON after that. Both your and Troy's help are much appreciated by me (...
by bdony
Mon May 26, 2008 8:31 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Initialization Problems
Replies: 12
Views: 18246

So I tried powering up with varying delays between the VDD and V0 rise, and it all yields the same result: two rows of solid blocks (faded by adjusting the contrast pot). I have verified all of the signals and voltage levels to the LCD (all the wiring I could think of), and now I am going to insert ...
by bdony
Mon May 26, 2008 1:15 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Initialization Problems
Replies: 12
Views: 18246

For pins 1, 2, and 3 I am actually using the pot circuit described in the datasheet on page 8 for a single supply. My 10k-20k pot gives me a voltage range of ~0 - 5 volts, where 0 gives me dark blocks and up around 5 I cannot see any blocks (too bright). I should have no problem hitting 0.5 volts. I...
by bdony
Sat May 24, 2008 1:39 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Initialization Problems
Replies: 12
Views: 18246

I'm currently addressing the VDD vs V0 rise time issue - I have the same full blocks of text with a backlight even though my V0 voltage is 0, so does that mean the spec applies to the current flow also? And about how much error is allowed from the typical 50ms delay (IE how low can that number be)? ...
by bdony
Wed May 21, 2008 5:29 pm
Forum: MOC/MOS/MOI/MOU/X-Board/MOP
Topic: Initialization Problems
Replies: 12
Views: 18246

I am also having initialization problems with an AL204A model LCD, specifically the MOP-AL204A-BGFW-25E-3IN. My initialization code is similar to the OPs, but not exactly the same. Mine consists of fewer instructions, and I can post it if this is the appropriate place. I am also unclear about the re...